[−][src]Struct reqwest::redirect::Policy
A type that controls the policy on how to handle the following of redirects.
The default value will catch redirect loops, and has a maximum of 10 redirects it will follow in a chain before returning an error.
limited
can be used have the same as the default behavior, but adjust the allowed maximum redirect hops in a chain.none
can be used to disable all redirect behavior.custom
can be used to create a customized policy.
Implementations
impl Policy
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pub fn limited(max: usize) -> Self
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Create a Policy
with a maximum number of redirects.
An Error
will be returned if the max is reached.
pub fn none() -> Self
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Create a Policy
that does not follow any redirect.
pub fn custom<T>(policy: T) -> Self where
T: Fn(Attempt) -> Action + Send + Sync + 'static,
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T: Fn(Attempt) -> Action + Send + Sync + 'static,
Create a custom Policy
using the passed function.
Note
The default Policy
handles a maximum loop
chain, but the custom variant does not do that for you automatically.
The custom policy should have some way of handling those.
Information on the next request and previous requests can be found
on the Attempt
argument passed to the closure.
Actions can be conveniently created from methods on the
Attempt
.
Example
let custom = redirect::Policy::custom(|attempt| { if attempt.previous().len() > 5 { attempt.error("too many redirects") } else if attempt.url().host_str() == Some("example.domain") { // prevent redirects to 'example.domain' attempt.stop() } else { attempt.follow() } }); let client = reqwest::Client::builder() .redirect(custom) .build()?;
pub fn redirect(&self, attempt: Attempt) -> Action
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Apply this policy to a given [Attempt
] to produce a [Action
].
Note
This method can be used together with Policy::custom()
to construct one Policy
that wraps another.
Example
let custom = redirect::Policy::custom(|attempt| { eprintln!("{}, Location: {:?}", attempt.status(), attempt.url()); redirect::Policy::default().redirect(attempt) });
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for Policy
impl Send for Policy
impl Sync for Policy
impl Unpin for Policy
impl !UnwindSafe for Policy
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,